There might be room for only one big-voiced diva on Fox’s hit “Glee.” Singing sensation Charice Pempengco’s scenes in the last season were dramatically cut, with sources telling us it was to avoid upsetting the show’s star Lea Michele.

Charice was cast as Sunshine Corazon, an exchange student who competes against lead character Rachel Berry (Michele). But after they recorded their knockout version of the Lady Gaga and Beyoncé hit “Telephone” for the season opener, Charice’s scenes were cut.

A show source told us: “Charice was signed for a minimum of five episodes and did a press junket with [fellow new star] Chord Overstreet. She had a big debut, but things changed and they didn’t put her back in. The word is, Lea is the big star, and producers want to keep her happy.”

Creator Ryan Murphy introduced Charice with fanfare, saying, “When that girl opens her mouth, angels fly out.” He also said later, “She’s coming back for five episodes at the end of the year. Lots of big, big, big ballads for Charice.” But she only reappeared in the two final episodes of the season in a much reduced role, and “was made to look much less adorable,” said a source.

A “Glee” spokesman said, “This is categorically untrue. We love Charice, and she was a wonderful addition to Glee last season. While it is true that she appeared in fewer episodes last year than we originally anticipated, this was due to her busy schedule and the natural creative process in which some story arcs … did not materialize as planned. Lea is a consummate pro who couldn’t be more welcoming of other powerhouse singers on the show, from Kristin Chenoweth to Idina Menzel, who is set to reprise her role as Rachel’s birth mom this fall.”